Happy Grenades are consumable explosive throwing weapons that inflict half the damage of an ordinary Grenade, and display a confetti effect. They must be acquired initially from a drop by the Party Girl when she is killed, although she only has
25*1/4 (25%) chance of dropping any each time she is killed. Once the Party Girl respawns again, they can be purchased for 250 each, while the player has them in their inventory.
- Happy Grenades are better suited to be used as a novelty item, as they do half the damage of normal Grenades and are harder to obtain. If bought from the Party Girl, they cost 3.33 times as much as a normal Grenade. To buy two Happy Grenades (which would deal a collective damage equivalent to a normal grenade), it would cost 5, about 6.67 times the cost of a normal Grenade.
- 电脑版 188.8.131.52：
- Now properly explodes and deals damage in Multiplayer.
- Weapon type changed from Throwing to Ranged.
- 电脑版 184.108.40.206：引入。
- 主机版 1.0.933.1：引入。（）
- 主机版 1.0.750.0：引入。（）
- 移动版 220.127.116.11：引入。